function FindPathForm() { 
	var req = null; 
	document.getElementById("findpath").innerHTML='<div style="text-align:center;"><img src="http://tntn.info/images/loading4.gif" /></div>';
 
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
		if (req.overrideMimeType) {
			req.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) {
		try {
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) { }
		}
       	}

	req.onreadystatechange = function() {
		if(req.readyState == 4) {
			if(req.status == 200) {
				document.getElementById("findpath").innerHTML=req.responseText;	
			} else {
				document.getElementById("findpath").innerHTML='<div style="text-align:center;"><img src="http://tntn.info/images/stop.png" /></div>';
			}	
		} 
	};
	req.open("POST", "findpath.php", true);
	req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
	req.send("depart="+document.getElementById("depart").value+"&arrivee="+document.getElementById("arrivee").value);
}